Trolley-wheel.



No. 862,485. PATENTED AUG. 6, 1907.

J. R. KIDNEY. TROLLEY WHEEL.

APPLIOATIOH FILED FEB. 25, 1907- No. se2,4s5.

" To all whom it may concern:

UNITED STATES;

'JOSIAHR. KIDNEY, or EAST HAMPTON, CONN ECTICUT, ASSIGNOR To THE EAST memoi BA'lENT- OFFIGEQi-fi BELL CO.:,,OF EAST-HAMPTON, CONNECTICUT, A CORPORATION.

rnoLriEY-wn EL.

Be it known that I, JosIAn R. KIDNEY, a citizen of the United States, residing at East Hampton, in the county of Middlesex and State of Connecticut; have invented a new and useful Improvement in 'Trolley- Wheels; and I do'hereby declare the following, when takenin connection with the accompanying drawings,

' and the letters of reference marked thereon; to be a full,

clear, and exact description oi the same, and which said drawings constitute part of this specification, and

represent, 'in- Figure l 'a side view of a trolley wheel constructed in accordance with my invention. Fig. 2 a vertical section through the same. Fig. 3 a plan view of theoutside of the bushings detached. Fig. 4 a longitudinal sectional'vi'ew through the hub chamber. Fig. 5 a sectional view illustrating'a modification of the form of the bushing.

This invention relates to an improvement in trolley wheels and particularly to bushings therefor, the object being to provide a bushing which will permit lubricating material contained in the hub to pass through it so as to maintain the proper amount on the pin;.and the invention consists in the construction hereinafter described and particularly-recited in the claims.

The wheel 2 is formed with a hub ,3 in the center of which is an annular deep groove or chambervi formed with an opening 5 adapted to be closed by a screw plug 6. The passage through the hub 'is considerably larger in diameter than the diameter of the pin on which the l a plug'lO of wood, the plugs being driven in sothat flush with the bushing. As, be-

wheel is mounted, and into this hub is placed a bush ing 7. This bushing fits very-snugly in the hub. In the outer surface oflthe bushing a series of longitudinal grooves 8 are formed, and in these grooves are a number of holes 9 tapering inward, and in eachhole is inserted;

their inner ends are fore stated, the bushing closely fits the hub, andthe ends of the bushing form a substantially oil tight joint.

I Specification-of Letters Patent.- Application fins February 25,1001. semi No. 369.265.

The chamber 4 is filled with oil through the hole 5 which is then closed by the plug Band this oil'will A colate through the plugs and spread upon the inner surface of the bushing and uponthe usual pin passing through it, a sufficient amount of oil passing through Patented Aug. 6, L.

the plugs to maintain proper lubrication but only such" an amount as will be necessary, the flow'oi oil through" thcplug's being so slow that even if the sin-faces oi the -pin'or'adjacent surface of the bushing become worn, an 1 excess amount of oil will not escape from the chamber. If for certain purposes a larger amount of lubricating material is required, the bushing may be formed with tapered slots ll in the grooves 8 instead of t-he'holes above described, and tapered strips of wood. l2 inserted into these slots, the operation being substantially the same. of oil to keep the bearing lubricated for a long time and thesu'pply'may be replenished from time to time as necessaryybut'at no time will an excess, amount-oi oil pass onto the -maring, hence the hearing will not be come coated and the electric contact will not be interferedwith: Y f 1' By tapering the holes in. the bushing and correspondingly. tapering the woodenplugs or'stripb therefor the plugs or strips are scciirelj held in place. These The chamber will contain sufficient amount? wheels are made up in quantitiesand nay not be at, the plugs dry up put into immediatmseso I ightiwould be liable to and shrink, and, if made fall out of place, but by. tapering them they are securely held in the bushing and eady toperi rim their function when required Iclaim: -1- f AL'trolle'ywheel mp' H chamber, ll bushhi g'closely fittlngfliald huljy. snld'bulhlnl formed with exterior groores li'olesflhfsa grooves and ex tending through said bushing, and-w lYitnesses:

Yrs: BJSTABR, JAMES F lCH pluplnserted Into g a hub'formed with an'anniilar 

